Yarn holder for bobbin transfer magazines



March 5, 1946.

G. 'W. PARKIN YARN HOLDER FOR BOBBIN TRANSFER MAGAZINES Filed Nov. 24,1945 Al IORNEYS Patented Mar. 5, 1946 O FFI'C E YARNHonD'ER Fon BOBBINTRANSFER' MAGAZINES v George.W.Parkin, Esmond; R; Appli-Catibn-NhvemUer24, 1943 Srill N0. 511,568A

This Y invention relates to` 'holding the. weft-.yarn

which extendsfrom a bobbinA transfer,A magazine of a loom.

Various devices haveibeen used for. holding the yarn which extendsfromthe bobbin.z of thetransfermagazine. Those which have:become more orless standard' equipmentin weave rooms: are located a substantialdistancefrom.- the magazine so that the angles which are-mrmedbetWeenthe bobbins which gravitate` downwardly inl the magazine and the pointat.- which the ends. of the yarn are held Will'notY be: too abrupt.Thisldistance requiresv a substantial length ofyarn for this leadand'thu's for each bobbin. a considerable lengthv of yarn is wasted.This length'ofy waste when multiplied by the large number. of bobbinswhich are'used becomes: a substantial amount.

Oneof the objectsof thisinvention isftofprovide an arrangement sotha-tthe' grippediend' of the'ryarn will travel with the-bobbin-.infitsdown.-vr ward gravitation so that butva shorti extentof yarn from thebobbin to the holder willebefneces sary. y

Another object of this inventionxis:torprovide an. arrangement so that.the gripped: endV ofr the yarnwill be discharged after` the holdingthereof` has performed its useful function.-

Another object of the-invention isftoso hold.

the yarn that a-tension will-.be.prdvidedwuponthe end at all times thatvthe yarn; may: be nicelycontrolled.

Another object ofy this invention is toprovide; a-

device, which will be light inweight .and-one-which;

may be easily and quickly assembled; upon all; looms which are now inoperation.

Another object of' this` invention is to: provide an arrangement so thatthelcut end':oi:tlf1e.y yarn will be prevented from dropping intothe layto= serve as an obstruction tothe: movingV shuttle.

With these and other objectsin.view,:the-in vention consists of certainnovel featureszofeconfstruction, as will be more fullyfdescribed'andparf` ticularly pointed out in the appendedlclaims. 1

In the accompanying drawing:

Fig. 1. is an elevation looking` at. the bobbinf magazine andillustrating thelay in section with.v

' the shuttle in positie-nin avbox beneath .the mag.-`

azine, also showingr myv yarnv holder in itsrela tive position;

Fig. 2 is an .endview ofr thestructure show-n' inFig. 1 withthelayomitted;

Fig. 3. is a fragmentalsectionalview. ofaa. part of; the magazinebutshowing` my holding device in top plan:

Fig. 4: is an! enlarged: fragmentalsecticnal view of apart of. one ofthe drums and the. clamping. device which is associated with the beltafter the clamp` has moved to release itsv gripl upon. the yarn ends;

6 Fig. 5 is alsectional vieW through one oftheY drums showing a smallbearing mounting;

Fig. 6 is a sectional view on line 6 6 of Fig. 2..-

In proceeding with this invention I provide an.

arrangement which may be placed closely to the bobbin magazine, forexample within four to. Sixy inchesif desired. The arrangementissuchthat the clamps'forv the yarn endswilltravelabout anr orbit sothat as the bobbins gravitatedownwardl'y 1 inV the. magazine theclampedv ends willi move.

be extended. After the bobbin is transferred into the shuttle astheclamp travels-about. the. end..

generally a bobbin magazine. with a plurality of bobbin packageslltherein. This magazine us.-

ually consistsof endl Walls i2 andr I3, the latter of whichis providedwith slots J4. and-.I 5 through.4 whichrthe ends ofl yarnfmay extend.Themagazinewhich-is hereillustrated.consists of four lines.

forfour. stacks of bobbins with the yarn ends ofl parallelrowsextendingthrough the slots. l4.and..

lv-asshowny at i5.. The laydesignated-v generally His-shown fragmentallyinFg. vland-iscut away to exposeashuttle llintowhich one .ofthe packages now designatedY I9 is illustrated in dotted lines. shown asextendinglto the holding device.I

o The bobbins are supplied to the magazine4 from; timefto time andeachend such-as l6-from-thesea bobbinslis. lead outwardly through theslotsllLor iftofa holding device. l v

The' holding device which-.1. have providediis mounted oir-the endplatei3 and. consistsofY a rod or bar 2 |f,`see.-Figs.l, 2i and-.6,.whichisfflrml-y` mounted. by means ofy a( bolt 22: 5o thatitlwill.

extend. outwardly from the plate Vl 31 Frornlthe end'off this bar, arms23 and24-are mounted-by.

whereby the short lead to the clamp` need. not.

With reference to the drawing, Hl designatesv The end 2B of this bobbinpackage: is-

means of: theV set` screw 25- and binding bolt 2 5 sothatthe. arm.23extends upwardly. slightlyy at anVV angle A to: the horizontal whilethee arm... 2lik exs tends vertically upwardly from this arm 23. This.bracket-i-like formation servesy to.` mountl as pair 4 off drums.Theuppen drum 2-1 isl mounted by;

means of the pin 28 on a ball bearing 29. The reduced portion 30 of thispin extending through the arm 24 and is held in position by a nut 3|,binding upon the washer 32. The drum 33 is mounted upon a similar pindesignated 28' having a ball bearing and a reduced portion 30 which issomewhat longer` than the portion 3U in order that it may extend througharms 23 and 24 and a hinge ear 33 providing a hinge pivot it for theclamping arm 4I which has a handle portion 42 and which is urged intoclamping position against the straight portion of the belt by a spring43 acting between the handle 42 and the base 3l. When these clamps arealong the straight run of the belt they are forced into engagement withthis straight run of belt by the springs 43. However, as the clamps moveabout the drum as shown in Fig. l they will move away from the belt soas to permit the group of ends such as I6 which may be held between thearms di and the belt to be moved from position.

'I'he ends I6 which extend through the slots I 4 and l5 are carried overto the clamp, there being perhaps eight to twelve ends positioned in asingle clamping unit. This is easily accomplished by grouping these endstogether and pressing on the handle 42 to move the arm 4l away from thebelt and then positioning the gro-up of threads therein and releasingthe handle 42 to permit the spring to press the yarns tightly againstbelt and hold them in position. As the bobbins from the lower end of themagazine are positioned in the shuttle the entire group of bobbins abovemoves downwardly. As this downward movement occurs there is suiiicientpull upon the clamp to move the belt and the clamp downwardly. The ballbearings enable the belt to have this free movement. This grip upon theyarn from each bobbin is maintained until that bobbin is inserted in theshuttle andthe shuttle travels across'the loom for the rst pick, afterwhich the cutter operates to cut off this end close to the selvedge. Assucceeding bobbins pull the belt downwardly the clamp arrives at a pointto pass about the drum 33 as shown in Fig. 4 and this clamp moves awayfrom the belt 35 so as to release the yarn ends IB which have beenclamped thereby.

In order to strip the yarn ends from the belt and to prevent these yarnends from moving into parts of the loom where they are not desired Ihave provided a plate 45 which is slotted as at 46 to receive th'e arm23 therethrough and which is slotted as at 4l to receive the drum andthe clamps therethrough as shown in Fig. 3. However, the yarn ends suchas 23 which extend across this plate will not pass downwardly after theyengage the plate but rather will be stripped at the plate while the beltand the clamp move onwardly leaving these yarn ends on the plate (seethe group designated I6 in Fig. 4). By this arrangement these cut yarnends may be nicely controlled and gathered up at intervals so that thiswaste wil not get into moving parts of the loom.

The arrangements which I have provided by the gripped ends of the yarnmoving downwardly er may be mounted and that at which' other holders aremounted in order to have a suiciently long lead so that convenientoperation without too great a stressing on the yarn may be prevented.

Iclaim:

1. In a weft replenishing loom, a bobbin magazine having a reservesupply of bobbins movable by gravity, said magazine having a slotthrough which the weft ends extend, aweft end holder adjacent themagazine provided with means to engage the weft ends and hold the sameunder tension, said engaging means being movable by the pull of the weftends thereon as the bobbins from which the ends extend move in saidmagazine.

2. In a weft replenishing loom, a bobbin magazine having a reservesupply of bobbins movable by gravity, said magazine having a slotthrough which the weft ends extend, a weft end holder mechanism adjacentthe magazine provided with a plurality of means to engage a group of theweft ends and hold the same under tension, said engaging means beingmovable by the pull of the weft ends thereon as the bobbins from whichthe ends extend move in said magazine.

3. In a weft replenishing loom, a bobbin magazine having a reservesupply of bobbins movable by gravity, said magazine having a slotthrough which the weft ends extend, a weft end holder mechanism adjacentthe magazine provided with a plurality of means to engage a group o fthe weft ends and hold the same under tension, means to mount saidengaging and holding means for movement in a closed orbit, said engagingmeans being movable by the pull of the weft ends thereon as the bobbinsfrom which the ends extend l gravitate downwardly in said magazine.

4. In a weft replenishing loom, a bobbin magazine having a reservesupply of bobbins movable by gravity, said magazine having a slotthrough which the weit ends extend, a weft end holder adjacent themagazine provided with means to engage the weft ends and hold the sameunder tension, said engaging means being movable by the pull of the weftends thereon as the bobbins from which the ends extend move in saidmagazine, and means to cause the engaged weft ends to become releasedand discharged from the holder at a predetermined point in their travel.

5. In a weft replenishing loom, a bobbin magazine having a reservesupply of bobbins movable by gravity, said magazine having a slotthro-ugh which'the weft ends extend, a weft end holder mechanismadjacent the magazine provided with a plurality of means to engage agroup of the weft ends and hold the same under tension, means to mountsaid engaging and holding means for movement in a closed orbit, saidengaging means being movable by the pull of the weft ends thereon as thebobbins from which the ends extend gravitate downwardly in saidmagazine, and means to cause the engaged weft ends to become releasedand discharged from the holder at a predetermined point in their travel.

6. A thread holder for a weft replenishing loom having a reserve supplyof bobbins from which extend weft ends, comprising a pair of drums each'freely rotatably mounted in spaced relation and rotatable in a planesubstantially at right angles to the axes of the bobbins, a flexiblebelt prising a, pair of drums each freely rotatably mounted in spacedrelation and rotatable in a plane substantially at right angles to theaxes of the bobbins, a flexible belt on saiddrums and a. plurality ofclamps on said belt ink spaced relation for holding the weft ends of thebobbins, said drums being suii'iciently freely rotatable for the weftends to rotate the drums as the bobbins gravitate downwardly in themagazine.

8. A thread holder -for a weft replenishing loom having a reserve supplyof bobbins from which extend weft ends, comprising a pair of drums eachfreely rotatably mounted in kspaced relation and rotatable in a planesubstantially at right angles to the axes of the bobbins, a. flexiblebelt on said drums and a plurality of clamps on said belt inspacedrelation for clamping the weft ends of the bobbins against thebelt.

9. A thread holder for a weft replenishing loom having a reserve supplyof bobbins from which extend weft ends, comprising a pair of drums eachfreely rotatably mounted in spaced relation and rotatable in a planesubstantially at right angles to the axes of the bobbins, a flexiblebelt on said drums and a plurality ofclamps on said belt in spacedrelation for clamping the weft ends of the bobbins against the belt,each clamp being so mounted as to move away from the belt as it travelsabout the drum to release its clamping engagement with the weft ends.

10. A Vthread holderfor a weft replenishing loom having a reserve supplyof bobbins from which extend weft ends, comprising a pair of drums eachfreely rotatably mounted in spaced relation and rotatable in a, planesubstantially at right angles to the axes' cf the bobbins, a flexiblebelt on said drums and a plurality of clamps on said belt in spacedrelation for clamping the weft ends of the bobbins against the belt,each clamp being so mounted as to move away from the belt as it travelsabout the drum to release its clamping engagement with the weft ends,said lower drum being so positioned that release occurs at a time afterthe bobbin is transferred to the shuttle. o 11. A thread holder for aweft replenishing loom having a reserve supply of bobbins from whichextend weft ends, comprising apair of drums each freely rotatablymounted in spaced relation and rotatable in a plane substantially atright angles to the axes of the bobbins, a flexible belt on said drumsand a plurality of clamps on said belt in spaced relation for clampingthe weft ends of the bobbins against the belt, each clamp being somounted as to move away .from the belt as it travels about the drum torelease its clamping engagement withthe weft ends, said lower drum beingso positioned that release occurs at a time after the bobbin istransferred to the shuttle and a stripper plate to remove the yarn fromthe belt clamps.

GEORGE WM. PARKIN.

